Engine



D. MAGUSIAK ENGINE Filed may 51, 1927 5 Sheets-Sheet rl- IL Il if il #l ATTO RN EY July 17, 192s. 1,617,483

D. MAG USlAK ENGINE Filed May 31, 1927 s sheets-sheet 2 M l N V E N-TOR ATTORNEY July 17, 1928. 1,677,483

D. MAGUslAK l ENGINE Filed May 31. 1927 3 Sheets-Sheet 3 INVENTOR ATTO R N EY LN i V through one of the pistons.

lPatented July 17, 1928.

, sers DANIEL MAGUSIAK, OF DETROIT, MICHIGAN. y

ENGINE.

- Application le. May 31,

This invention relates to an engine of the two cycle type, the general object of the invention` being to provide means whereby a pure mixture vis fed directly to the cylinders and does not pass through the crank case so that oil is not mixed with the fuel and said crank case can contain oil.

Another object of the invention is to provide a forced feed of the mixture .from one Cylinder into another and to provide a rapid intake of the mixture and to reduce toa minimum leakage of the mixture between the'parts-and also to reduce friction between the pistons and cylinder walls.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out -in the appended claims. y i

In describing my invention in detail, reference will be had to the Vaccompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is an elevation of engine, withparts in section. Y

Figure 2 is a longitudinal sectional View.l

Figure 3 is a transverse sectional view." .l Figure 4 is a section on line 4-4 vof Figure 3. l

Figure 5 is a transverse sectional View the improved In these views, 1 indicates the crank case` vupon which the cylinders 2 are supported, the cylinders being air cooled, though it will, of course, bev understood that they may be formed with water jackets, if desired. Each cylinder is formed with an enlarged lower portion which forms an annular compres-l sion chamber 3 and each piston 4 is provided with an enlargement 5 at its lower end which compresses the mixture in the chamber 3 on the upward stroke of the piston. The pistons are arranged in pairs, as shown, with the pistons of each pair connected with oppositely arranged cranks of the crank shaft 6 bythe connecting rods 7 so that as one piston of the pairv is finishing its up stroke, the othery piston is finishing its down stroke.

A casing 8 is arranged aty one side of the engine and a pair lof horizontally arranged partitions 9 divide the easing into three compartments@ the-lower compartment i927. serial N. 195,558.

forming the inlet manifold and is connected with' the carburetor of the engine in ithe usual manner,a nipple 11 being formed on the lower part of the casing to receivethe connecting pipe whichvleads to the carbureter or the carbureter may be fastened directly to this nipple. ment is divided by the vert-ical partitions 12 into 'a plurality of chambers 13, one for each cylinder andan elongated port 14 connects each chamber with the top part ofl eachi chamber 3 of the cylinder.

Vvertically karranged Z-shaped partitions l15 divide the top compartment into aplurality of chambers 16, onefor each cylinder and an elongated port v17 connects'cacli chamber 16 with a cylinder adjacent the lower end of the small Apartof the cylinder, this port 17 being uncovered by the'piston just before the piston reaches the endfof-its- The second compartdownward stroke. The lower partition has a plurality of ports 18 therein, one for each l chamber' 13` and these ports are normally held closed by the spring pressed valves 19. The upper partition 9 has a plurality of ports 2() therein for connecting each cham-` the fourth cylinder with the chamber -16" of the third cylinder.

From the foregoing it will be scent-hat during the downv stroke `of each piston of each pair, a ,suction willbe created in the` chamber 3 by the enlarged part pof the piston so that the valve 19 will be lifted aga-inst the action of its spring and some ofthe mixture in the compartment 10 will be drawn into the chamber 13 of this cylinder and it will pass from this chamber Vthrough the port 14 intothe space 3. Then onthe upward stroke, this mixture in the space 3 will be forced therefrom back into the chamber 13, from which it will pass through the port 20 into the chamber 16 of thesecond cylinder of the pairand then as the piston of.

this second cylinder uncovers the port'l?, the n iizrturey will pass from the chamber 16 tix-.amiga the para if? ima et the Aupward stroke of the piston.

cylinder Where it will he compressed on the A baille plate 21 is arranged on the top of each piston-to direct the incoming mixture into the top part of the cylinder andy to prevent itfrom pass- Y ing through the exhaust port 22 whichdsY arranged in the opposite side of the cylinder from the inlet port 17. This incoming mixture will act to scavenge the exhaust gases from the cylinder through the port QQ/'into `the exhaust manifold 23. `pressediinth'e top part of the'cylinder by The mixture comthe -piston is fired-by the usual spark plug 241Thez mixture forced 'into the chamber v13 ofi the second cylinder of the` pair will VVpass through the port yQ() .intothef chamber `liofthe first cylinder of the pair2^so that the piston ofeach cylinderof` each pair will act todeliver and pre-compress the mixture 'for the other cylinder ofeaehzpaiiz VThe sizeof the chambers 13 'and 16 should Ahermade equal to the piston displacement volume so aste keep'gthemixture in a partly compressed. stateater it leaves the compression'fspace 3.' Inxthis improved engine, il purefmi-xtureis` fed directly to the cylinders as the mixture does not paas threngh the-*crank case so lthat it is not mixedwvith 'oil'land oilican be usedvin the crankcase and brut:afsmigggle crank case 1s rused foran even number of cylinders. Leakageis reduced to a minimum and the intakeiofzthe mixture very rapid; The mixture entering the chamber racts to coolthe piston 'andI there isi less rfrictonvbetween the piston and cyl- .inder'walls `There isalso a forced feediof the mixture from one cylinder to another. VIt'is thoughtdrom the foregoing'descrip- Y tion thatithe advantages and novel features omvzinvention will ,'befsreadily apparent'.

I' esire lit! to loeI understood that I! may make-changes `in Ythe 'construction and in 'the combination and arrangement .of lthe several -parts,provided that such' changes' fall iwithin the scopeoct theappendedcla'ims.

e What I-'cla-im'is:- y

1. A two cycle engine comprisingfafnumberief cylinders, .a `crank 'case connected with theffcylindrs, ea'chfcylilnder having anen'- largied inner endforming` a compression chamber, a piston in each chamber having an enlarged inner end operating inthe compression chamber, a crank shaft in the` crank case, a connecting rod connecting each Y piston with Athe crank shaft, each cylinder having inlet and exhaust ports therein which are uncovered when the piston is at the limit of its down stroke', an inlet manifold, a lower intake chamber for each'. cylinder in commuiii-cati on with the manifold, Vai spring'fpressed lvalve closing such communication', .thecylinder having a porttherein"connecting.each chainherwith the compression chamber, vand anv upper intake chamber incommunication with the inlet port of each cylinderfand also in free communication with the lower intake chamber of a secondcylinder.

2.A two Cycle engine of the elassfdef Y scribed comprising apair of cylinders,eaeh f provided with an enlarged.y inneri portion forming a` compression. chamber, alpistonr in each e linder havin!T 'an enlarged lowerend operating inthe compression Achamleer,'a casing arranged `at one side offthe cylinders, horizontal partitions inJ the chamber dividing the same into three compartments, means forconnectingthe lower compartmentfto`r a carbureter, verticalpartitions in the central compartment dividing thesame into lower intake chambers, the lower horizontalpartition Y having ports f therein` connecting the chambers with `the manifold, spring pressed valves normally closing said ports, each cylinderfhaving al port therein for connecting' .each intake chamber with-lits compression chamber, vertically arranged Z-shap'ed partitions in the top compartmentdividing the same into upper intake chambers and the upper horizontal partition:- havi'n-g@ ports therein, Veaehfof Whiie'hhconnects thei ripperV chamber of one cylinder with the lower chamber of'l'thenext: cylinder, each! cylinder having an inlet portleadiln'g to thefupperintake chamber andv 'anexhaust l port, 'the inlet and exhaust 'ports"beingfuneovered when' the piston` reaches-the end' of' its downward stroke, a crankl shaft`f and meansA forfconnecting thepistons`V thereto.-

Inf testimony whereof l affix-my signature.

'DANIEL MAGUSIAKL 

